LTC3526 Linear Technology, LTC3526 Datasheet - Page 4

• Manufacturer Part Number: LTC3526
• Description: 500mA 1MHz Synchronous Step-Up DC/DC Converters
• Manufacturer: Linear Technology

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LTC3526/LTC3526B
TYPICAL PERFORMANCE CHARACTERISTICS
4
0.60
0.55
0.90
0.85
0.80
0.75
0.70
0.65
0.50
0.45
0.40
0.35
0.30
100
30
90
80
70
60
50
40
30
20
10
50
45
40
35
25
20
15
10
0
0
5
1.0
1.0
1.5
Start-Up Delay Time vs V
Burst Mode Threshold Current
vs V
R
V
C
L = 4.7μH
DS(ON)
OUT
OUT
IN
1.5
LEAVE BURST
2.0
= 3.3V
= 10μF
ENTER BURST
1.5
vs V
2.0
2.5
OUT
2.5
3.0
V
V
V
OUT
IN
IN
2.0
PMOS
NMOS
(V)
(V)
3.0
3.5
(V)
3.5
4.0
2.5
IN
4.0
4.5
3526 G08c
3526 G07
3526 G10
4.5
3.0
5.0
–10
30
25
20
15
10
60
50
40
30
20
10
10
–2
–4
–6
–8
5
0
0
8
6
4
2
0
–50
1.0
1
Burst Mode Threshold Current
vs V
Burst Mode Threshold Current
vs V
Oscillator Frequency Change
vs Temperature
V
C
L = 4.7μH
NORMALIZED TO 25°C
V
C
L = 4.7μH
LEAVE BURST
OUT
OUT
OUT
OUT
1.5
–30
LEAVE BURST
ENTER BURST
IN
IN
= 1.8V
= 10μF
= 5V
= 10μF
ENTER BURST
–10
2.0
TEMPERATURE (°C)
2.5
10
V
V
1.25
IN
IN
(V)
(V)
3.0
30
3.5
50
4.0
70
3526 G08d
3526 G08a
3526 G11
1.5
4.5
90
1.3
1.2
1.1
1.0
0.9
0.8
0.7
35
30
20
15
10
–4
40
25
–1
–2
–3
–5
–6
0
2
1
0
5
–50
1.5
1
Burst Mode Threshold Current
vs V
Oscillator Frequency Change
vs V
R
V
C
L = 4.7μH
NORMALIZED TO 3.3V
NORMALIZED TO 25°C
DS(ON)
OUT
OUT
2.0
LEAVE BURST
–30
IN
OUT
= 2.5V
= 10μF
Change vs Temperature
–10
2.5
1.25
TEMPERATURE (°C)
ENTER BURST
3.0
10
V
V
OUT
IN
(V)
(V)
3.3
30
1.5
4.0
50
4.5
70
3526 G08b
3526 G09
3526 G12
3526bfb
1.75
5.0
90